Mercurial > hg
view tests/test-copytrace-heuristics.t @ 42044:bb271ec2fbfb
compression: introduce a `storage.revlog.zstd.level` configuration
This option control the zstd compression level used when compressing revlog
chunk. The usage of zstd for revlog compression has not graduated from
experimental yet, but we intend to fix that soon.
The option name for the compression level is more straight forward to pick, so
this changesets comes first. Having a dedicated option for each compression
engine is useful because they don't support the same range of values.
I ran the same measurement as for the zlib compression level (in the parent
changesets). The variation in repository size is stay mostly in the same (small)
range. The "read/write" performance see smallish variation, but are overall much
better than zlib. Write performance show the same tend of having better write
performance for when reaching high-end compression.
Again, we don't intend to change the default zstd compression level (currently:
3) in this series. However this is worth investigating in the future.
The Performance comparison of zlib vs zstd is quite impressive. The repository
size stay in the same range, but the performance are much better in all
situations.
Comparison summary
==================
We are looking at:
- performance range for zlib
- performance range for zstd
- comparison of default zstd (level-3) to default zlib (level 6)
- comparison of the slowest zstd time to the fastest zlib time
Read performance:
-----------------
| zlib | zstd | cmp | f2s
mercurial | 0.170159 - 0.189219 | 0.144127 - 0.149624 | 80% | 88%
pypy | 2.679217 - 2.768691 | 1.532317 - 1.705044 | 60% | 63%
netbeans | 122.477027 - 141.620281 | 72.996346 - 89.731560 | 58% | 73%
mozilla | 147.867662 - 170.572118 | 91.700995 - 105.853099 | 56% | 71%
Write performance:
------------------
| zlib | zstd | cmp | f2s
mercurial | 53.250304 - 56.2936129 | 40.877025 - 45.677286 | 75% | 86%
pypy | 460.721984 - 476.589918 | 270.545409 - 301.002219 | 63% | 65%
netbeans | 520.560316 - 715.930400 | 370.356311 - 428.329652 | 55% | 82%
mozilla | 739.803002 - 987.056093 | 505.152906 - 591.930683 | 57% | 80%
Raw data
--------
repo alg lvl .hg/store size 00manifest.d read write
mercurial zlib 1 49,402,813 5,963,475 0.170159 53.250304
mercurial zlib 6 47,197,397 5,875,730 0.182820 56.264320
mercurial zlib 9 47,121,596 5,849,781 0.189219 56.293612
mercurial zstd 1 49,737,084 5,966,355 0.144127 40.877025
mercurial zstd 3 48,961,867 5,895,208 0.146376 42.268142
mercurial zstd 5 48,200,592 5,938,676 0.149624 43.162875
mercurial zstd 10 47,833,520 5,913,353 0.145185 44.012489
mercurial zstd 15 47,314,604 5,728,679 0.147686 45.677286
mercurial zstd 20 47,330,502 5,830,539 0.145789 45.025407
mercurial zstd 22 47,330,076 5,830,539 0.143996 44.690460
pypy zlib 1 370,830,572 28,462,425 2.679217 460.721984
pypy zlib 6 340,112,317 27,648,747 2.768691 467.537158
pypy zlib 9 338,360,736 27,639,003 2.763495 476.589918
pypy zstd 1 362,377,479 27,916,214 1.532317 270.545409
pypy zstd 3 354,137,693 27,905,988 1.686718 294.951509
pypy zstd 5 342,640,043 27,655,774 1.705044 301.002219
pypy zstd 10 334,224,327 27,164,493 1.567287 285.186239
pypy zstd 15 329,000,363 26,645,965 1.637729 299.561332
pypy zstd 20 324,534,039 26,199,547 1.526813 302.149827
pypy zstd 22 324,530,595 26,198,932 1.525718 307.821218
netbeans zlib 1 1,281,847,810 165,495,457 122.477027 520.560316
netbeans zlib 6 1,205,284,353 159,161,207 139.876147 715.930400
netbeans zlib 9 1,197,135,671 155,034,586 141.620281 678.297064
netbeans zstd 1 1,259,581,737 160,840,613 72.996346 370.356311
netbeans zstd 3 1,232,978,122 157,691,551 81.622317 396.733087
netbeans zstd 5 1,208,034,075 160,246,880 83.080549 364.342626
netbeans zstd 10 1,188,624,176 156,083,417 79.323935 403.594602
netbeans zstd 15 1,176,973,589 153,859,477 89.731560 428.329652
netbeans zstd 20 1,162,958,258 151,147,535 82.842667 392.335349
netbeans zstd 22 1,162,707,029 151,150,220 82.565695 402.840655
mozilla zlib 1 2,775,497,186 298,527,987 147.867662 751.263721
mozilla zlib 6 2,596,856,420 286,597,671 170.572118 987.056093
mozilla zlib 9 2,587,542,494 287,018,264 163.622338 739.803002
mozilla zstd 1 2,723,159,348 286,617,532 91.700995 570.042751
mozilla zstd 3 2,665,055,001 286,152,013 95.240155 561.412805
mozilla zstd 5 2,607,819,817 288,060,030 101.978048 505.152906
mozilla zstd 10 2,558,761,085 283,967,648 104.113481 497.771202
mozilla zstd 15 2,526,216,060 275,581,300 105.853099 591.930683
mozilla zstd 20 2,485,114,806 266,478,859 95.268795 576.515389
mozilla zstd 22 2,484,869,080 266,456,505 94.429282 572.785537
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Wed, 27 Mar 2019 18:35:59 +0100 |
parents | a3fd84f4fb38 |
children | 1afd9d1e55ca |
line wrap: on
line source
Test for the heuristic copytracing algorithm ============================================ $ cat >> $TESTTMP/copytrace.sh << '__EOF__' > initclient() { > cat >> $1/.hg/hgrc <<EOF > [experimental] > copytrace = heuristics > copytrace.sourcecommitlimit = -1 > EOF > } > __EOF__ $ . "$TESTTMP/copytrace.sh" $ cat >> $HGRCPATH << EOF > [extensions] > rebase= > shelve= > EOF NOTE: calling initclient() set copytrace.sourcecommitlimit=-1 as we want to prevent the full copytrace algorithm to run and test the heuristic algorithm without complexing the test cases with public and draft commits. Check filename heuristics (same dirname and same basename) ---------------------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ mkdir dir $ echo a > dir/file.txt $ hg addremove adding a adding dir/file.txt $ hg ci -m initial $ hg mv a b $ hg mv -q dir dir2 $ hg ci -m 'mv a b, mv dir/ dir2/' $ hg up -q 0 $ echo b > a $ echo b > dir/file.txt $ hg ci -qm 'mod a, mod dir/file.txt' $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: 557f403c0afd2a3cf15d7e2fb1f1001a8b85e081 | desc: mod a, mod dir/file.txt | o changeset: 928d74bc9110681920854d845c06959f6dfc9547 |/ desc: mv a b, mv dir/ dir2/ o changeset: 3c482b16e54596fed340d05ffaf155f156cda7ee desc: initial $ hg rebase -s . -d 1 rebasing 2:557f403c0afd "mod a, mod dir/file.txt" (tip) merging b and a to b merging dir2/file.txt and dir/file.txt to dir2/file.txt saved backup bundle to $TESTTMP/repo/.hg/strip-backup/557f403c0afd-9926eeff-rebase.hg $ cd .. $ rm -rf repo Make sure filename heuristics do not when they are not related -------------------------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo 'somecontent' > a $ hg add a $ hg ci -m initial $ hg rm a $ echo 'completelydifferentcontext' > b $ hg add b $ hg ci -m 'rm a, add b' $ hg up -q 0 $ printf 'somecontent\nmoarcontent' > a $ hg ci -qm 'mode a' $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: d526312210b9e8f795d576a77dc643796384d86e | desc: mode a | o changeset: 46985f76c7e5e5123433527f5c8526806145650b |/ desc: rm a, add b o changeset: e5b71fb099c29d9172ef4a23485aaffd497e4cc0 desc: initial $ hg rebase -s . -d 1 rebasing 2:d526312210b9 "mode a" (tip) file 'a' was deleted in local [dest] but was modified in other [source]. What do you want to do? use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ cd .. $ rm -rf repo Test when lca didn't modified the file that was moved ----------------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo 'somecontent' > a $ hg add a $ hg ci -m initial $ echo c > c $ hg add c $ hg ci -m randomcommit $ hg mv a b $ hg ci -m 'mv a b' $ hg up -q 1 $ echo b > a $ hg ci -qm 'mod a' $ hg log -G -T 'changeset: {node}\n desc: {desc}, phase: {phase}\n' @ changeset: 9d5cf99c3d9f8e8b05ba55421f7f56530cfcf3bc | desc: mod a, phase: draft | o changeset: d760186dd240fc47b91eb9f0b58b0002aaeef95d |/ desc: mv a b, phase: draft o changeset: 48e1b6ba639d5d7fb313fa7989eebabf99c9eb83 | desc: randomcommit, phase: draft o changeset: e5b71fb099c29d9172ef4a23485aaffd497e4cc0 desc: initial, phase: draft $ hg rebase -s . -d 2 rebasing 3:9d5cf99c3d9f "mod a" (tip) merging b and a to b saved backup bundle to $TESTTMP/repo/.hg/strip-backup/9d5cf99c3d9f-f02358cc-rebase.hg $ cd .. $ rm -rf repo Rebase "backwards" ------------------ $ hg init repo $ initclient repo $ cd repo $ echo 'somecontent' > a $ hg add a $ hg ci -m initial $ echo c > c $ hg add c $ hg ci -m randomcommit $ hg mv a b $ hg ci -m 'mv a b' $ hg up -q 2 $ echo b > b $ hg ci -qm 'mod b' $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: fbe97126b3969056795c462a67d93faf13e4d298 | desc: mod b o changeset: d760186dd240fc47b91eb9f0b58b0002aaeef95d | desc: mv a b o changeset: 48e1b6ba639d5d7fb313fa7989eebabf99c9eb83 | desc: randomcommit o changeset: e5b71fb099c29d9172ef4a23485aaffd497e4cc0 desc: initial $ hg rebase -s . -d 0 rebasing 3:fbe97126b396 "mod b" (tip) merging a and b to a saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fbe97126b396-cf5452a1-rebase.hg $ cd .. $ rm -rf repo Check a few potential move candidates ------------------------------------- $ hg init repo $ initclient repo $ cd repo $ mkdir dir $ echo a > dir/a $ hg add dir/a $ hg ci -qm initial $ hg mv dir/a dir/b $ hg ci -qm 'mv dir/a dir/b' $ mkdir dir2 $ echo b > dir2/a $ hg add dir2/a $ hg ci -qm 'create dir2/a' $ hg up -q 0 $ echo b > dir/a $ hg ci -qm 'mod dir/a' $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: 6b2f4cece40fd320f41229f23821256ffc08efea | desc: mod dir/a | o changeset: 4494bf7efd2e0dfdd388e767fb913a8a3731e3fa | | desc: create dir2/a | o changeset: b1784dfab6ea6bfafeb11c0ac50a2981b0fe6ade |/ desc: mv dir/a dir/b o changeset: 36859b8907c513a3a87ae34ba5b1e7eea8c20944 desc: initial $ hg rebase -s . -d 2 rebasing 3:6b2f4cece40f "mod dir/a" (tip) merging dir/b and dir/a to dir/b saved backup bundle to $TESTTMP/repo/.hg/strip-backup/6b2f4cece40f-503efe60-rebase.hg $ cd .. $ rm -rf repo Test the copytrace.movecandidateslimit with many move candidates ---------------------------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ hg mv a foo $ echo a > b $ echo a > c $ echo a > d $ echo a > e $ echo a > f $ echo a > g $ hg add b $ hg add c $ hg add d $ hg add e $ hg add f $ hg add g $ hg ci -m 'mv a foo, add many files' $ hg up -q ".^" $ echo b > a $ hg ci -m 'mod a' created new head $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: ef716627c70bf4ca0bdb623cfb0d6fe5b9acc51e | desc: mod a | o changeset: 8329d5c6bf479ec5ca59b9864f3f45d07213f5a4 |/ desc: mv a foo, add many files o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial With small limit $ hg rebase -s 2 -d 1 --config experimental.copytrace.movecandidateslimit=0 rebasing 2:ef716627c70b "mod a" (tip) skipping copytracing for 'a', more candidates than the limit: 7 file 'a' was deleted in local [dest] but was modified in other [source]. What do you want to do? use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ hg rebase --abort rebase aborted With default limit which is 100 $ hg rebase -s 2 -d 1 rebasing 2:ef716627c70b "mod a" (tip) merging foo and a to foo saved backup bundle to $TESTTMP/repo/.hg/strip-backup/ef716627c70b-24681561-rebase.hg $ cd .. $ rm -rf repo Move file in one branch and delete it in another ----------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ hg mv a b $ hg ci -m 'mv a b' $ hg up -q ".^" $ hg rm a $ hg ci -m 'del a' created new head $ hg log -G -T 'changeset: {node}\n desc: {desc}, phase: {phase}\n' @ changeset: 7d61ee3b1e48577891a072024968428ba465c47b | desc: del a, phase: draft | o changeset: 472e38d57782172f6c6abed82a94ca0d998c3a22 |/ desc: mv a b, phase: draft o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial, phase: draft $ hg rebase -s 1 -d 2 rebasing 1:472e38d57782 "mv a b" saved backup bundle to $TESTTMP/repo/.hg/strip-backup/472e38d57782-17d50e29-rebase.hg $ hg up -q c492ed3c7e35dcd1dc938053b8adf56e2cfbd062 $ ls b $ cd .. $ rm -rf repo Move a directory in draft branch -------------------------------- $ hg init repo $ initclient repo $ cd repo $ mkdir dir $ echo a > dir/a $ hg add dir/a $ hg ci -qm initial $ echo b > dir/a $ hg ci -qm 'mod dir/a' $ hg up -q ".^" $ hg mv -q dir/ dir2 $ hg ci -qm 'mv dir/ dir2/' $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: a33d80b6e352591dfd82784e1ad6cdd86b25a239 | desc: mv dir/ dir2/ | o changeset: 6b2f4cece40fd320f41229f23821256ffc08efea |/ desc: mod dir/a o changeset: 36859b8907c513a3a87ae34ba5b1e7eea8c20944 desc: initial $ hg rebase -s . -d 1 rebasing 2:a33d80b6e352 "mv dir/ dir2/" (tip) merging dir/a and dir2/a to dir2/a saved backup bundle to $TESTTMP/repo/.hg/strip-backup/a33d80b6e352-fecb9ada-rebase.hg $ cd .. $ rm -rf server $ rm -rf repo Move file twice and rebase mod on top of moves ---------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ hg mv a b $ hg ci -m 'mv a b' $ hg mv b c $ hg ci -m 'mv b c' $ hg up -q 0 $ echo c > a $ hg ci -m 'mod a' created new head $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: d413169422167a3fa5275fc5d71f7dea9f5775f3 | desc: mod a | o changeset: d3efd280421d24f9f229997c19e654761c942a71 | | desc: mv b c | o changeset: 472e38d57782172f6c6abed82a94ca0d998c3a22 |/ desc: mv a b o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial $ hg rebase -s . -d 2 rebasing 3:d41316942216 "mod a" (tip) merging c and a to c saved backup bundle to $TESTTMP/repo/.hg/strip-backup/d41316942216-2b5949bc-rebase.hg $ cd .. $ rm -rf repo Move file twice and rebase moves on top of mods ----------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ hg mv a b $ hg ci -m 'mv a b' $ hg mv b c $ hg ci -m 'mv b c' $ hg up -q 0 $ echo c > a $ hg ci -m 'mod a' created new head $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: d413169422167a3fa5275fc5d71f7dea9f5775f3 | desc: mod a | o changeset: d3efd280421d24f9f229997c19e654761c942a71 | | desc: mv b c | o changeset: 472e38d57782172f6c6abed82a94ca0d998c3a22 |/ desc: mv a b o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial $ hg rebase -s 1 -d . rebasing 1:472e38d57782 "mv a b" merging a and b to b rebasing 2:d3efd280421d "mv b c" merging b and c to c saved backup bundle to $TESTTMP/repo/.hg/strip-backup/472e38d57782-ab8d3c58-rebase.hg $ cd .. $ rm -rf repo Move one file and add another file in the same folder in one branch, modify file in another branch -------------------------------------------------------------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ hg mv a b $ hg ci -m 'mv a b' $ echo c > c $ hg add c $ hg ci -m 'add c' $ hg up -q 0 $ echo b > a $ hg ci -m 'mod a' created new head $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: ef716627c70bf4ca0bdb623cfb0d6fe5b9acc51e | desc: mod a | o changeset: b1a6187e79fbce851bb584eadcb0cc4a80290fd9 | | desc: add c | o changeset: 472e38d57782172f6c6abed82a94ca0d998c3a22 |/ desc: mv a b o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial $ hg rebase -s . -d 2 rebasing 3:ef716627c70b "mod a" (tip) merging b and a to b saved backup bundle to $TESTTMP/repo/.hg/strip-backup/ef716627c70b-24681561-rebase.hg $ ls b c $ cat b b $ rm -rf repo Merge test ---------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ echo b > a $ hg ci -m 'modify a' $ hg up -q 0 $ hg mv a b $ hg ci -m 'mv a b' created new head $ hg up -q 2 $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: 472e38d57782172f6c6abed82a94ca0d998c3a22 | desc: mv a b | o changeset: b0357b07f79129a3d08a68621271ca1352ae8a09 |/ desc: modify a o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial $ hg merge 1 merging b and a to b 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m merge $ ls b $ cd .. $ rm -rf repo Copy and move file ------------------ $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ hg cp a c $ hg mv a b $ hg ci -m 'cp a c, mv a b' $ hg up -q 0 $ echo b > a $ hg ci -m 'mod a' created new head $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: ef716627c70bf4ca0bdb623cfb0d6fe5b9acc51e | desc: mod a | o changeset: 4fc3fd13fbdb89ada6b75bfcef3911a689a0dde8 |/ desc: cp a c, mv a b o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial $ hg rebase -s . -d 1 rebasing 2:ef716627c70b "mod a" (tip) merging b and a to b merging c and a to c saved backup bundle to $TESTTMP/repo/repo/.hg/strip-backup/ef716627c70b-24681561-rebase.hg $ ls b c $ cat b b $ cat c b $ cd .. $ rm -rf repo Do a merge commit with many consequent moves in one branch ---------------------------------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ echo b > a $ hg ci -qm 'mod a' $ hg up -q ".^" $ hg mv a b $ hg ci -qm 'mv a b' $ hg mv b c $ hg ci -qm 'mv b c' $ hg up -q 1 $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' o changeset: d3efd280421d24f9f229997c19e654761c942a71 | desc: mv b c o changeset: 472e38d57782172f6c6abed82a94ca0d998c3a22 | desc: mv a b | @ changeset: ef716627c70bf4ca0bdb623cfb0d6fe5b9acc51e |/ desc: mod a o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial $ hg merge 3 merging a and c to c 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -qm 'merge' $ hg log -G -T 'changeset: {node}\n desc: {desc}, phase: {phase}\n' @ changeset: cd29b0d08c0f39bfed4cde1b40e30f419db0c825 |\ desc: merge, phase: draft | o changeset: d3efd280421d24f9f229997c19e654761c942a71 | | desc: mv b c, phase: draft | o changeset: 472e38d57782172f6c6abed82a94ca0d998c3a22 | | desc: mv a b, phase: draft o | changeset: ef716627c70bf4ca0bdb623cfb0d6fe5b9acc51e |/ desc: mod a, phase: draft o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial, phase: draft $ ls c $ cd .. $ rm -rf repo Test shelve/unshelve ------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ echo b > a $ hg shelve shelved as default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg mv a b $ hg ci -m 'mv a b' $ hg log -G -T 'changeset: {node}\n desc: {desc}\n' @ changeset: 472e38d57782172f6c6abed82a94ca0d998c3a22 | desc: mv a b o changeset: 1451231c87572a7d3f92fc210b4b35711c949a98 desc: initial $ hg unshelve unshelving change 'default' rebasing shelved changes merging b and a to b $ ls b $ cat b b $ cd .. $ rm -rf repo Test full copytrace ability on draft branch ------------------------------------------- File directory and base name changed in same move $ hg init repo $ initclient repo $ mkdir repo/dir1 $ cd repo/dir1 $ echo a > a $ hg add a $ hg ci -qm initial $ cd .. $ hg mv -q dir1 dir2 $ hg mv dir2/a dir2/b $ hg ci -qm 'mv a b; mv dir1 dir2' $ hg up -q '.^' $ cd dir1 $ echo b >> a $ cd .. $ hg ci -qm 'mod a' $ hg log -G -T 'changeset {node}\n desc {desc}, phase: {phase}\n' @ changeset 6207d2d318e710b882e3d5ada2a89770efc42c96 | desc mod a, phase: draft | o changeset abffdd4e3dfc04bc375034b970299b2a309a1cce |/ desc mv a b; mv dir1 dir2, phase: draft o changeset 81973cd24b58db2fdf18ce3d64fb2cc3284e9ab3 desc initial, phase: draft $ hg rebase -s . -d 1 --config experimental.copytrace.sourcecommitlimit=100 rebasing 2:6207d2d318e7 "mod a" (tip) merging dir2/b and dir1/a to dir2/b saved backup bundle to $TESTTMP/repo/repo/.hg/strip-backup/6207d2d318e7-1c9779ad-rebase.hg $ cat dir2/b a b $ cd .. $ rm -rf repo Move directory in one merge parent, while adding file to original directory in other merge parent. File moved on rebase. $ hg init repo $ initclient repo $ mkdir repo/dir1 $ cd repo/dir1 $ echo dummy > dummy $ hg add dummy $ cd .. $ hg ci -qm initial $ cd dir1 $ echo a > a $ hg add a $ cd .. $ hg ci -qm 'hg add dir1/a' $ hg up -q '.^' $ hg mv -q dir1 dir2 $ hg ci -qm 'mv dir1 dir2' $ hg log -G -T 'changeset {node}\n desc {desc}, phase: {phase}\n' @ changeset e8919e7df8d036e07b906045eddcd4a42ff1915f | desc mv dir1 dir2, phase: draft | o changeset 7c7c6f339be00f849c3cb2df738ca91db78b32c8 |/ desc hg add dir1/a, phase: draft o changeset a235dcce55dcf42034c4e374cb200662d0bb4a13 desc initial, phase: draft $ hg rebase -s . -d 1 --config experimental.copytrace.sourcecommitlimit=100 rebasing 2:e8919e7df8d0 "mv dir1 dir2" (tip) saved backup bundle to $TESTTMP/repo/repo/.hg/strip-backup/e8919e7df8d0-f62fab62-rebase.hg $ ls dir2 a dummy $ rm -rf repo Testing the sourcecommitlimit config ----------------------------------- $ hg init repo $ initclient repo $ cd repo $ echo a > a $ hg ci -Aqm "added a" $ echo "more things" >> a $ hg ci -qm "added more things to a" $ hg up 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo b > b $ hg ci -Aqm "added b" $ mkdir foo $ hg mv a foo/bar $ hg ci -m "Moved a to foo/bar" $ hg log -G -T 'changeset {node}\n desc {desc}, phase: {phase}\n' @ changeset b4b0f7880e500b5c364a5f07b4a2b167de7a6fb0 | desc Moved a to foo/bar, phase: draft o changeset 5f6d8a4bf34ab274ccc9f631c2536964b8a3666d | desc added b, phase: draft | o changeset 8b6e13696c38e8445a759516474640c2f8dddef6 |/ desc added more things to a, phase: draft o changeset 9092f1db7931481f93b37d5c9fbcfc341bcd7318 desc added a, phase: draft When the sourcecommitlimit is small and we have more drafts, we use heuristics only $ hg rebase -s 8b6e13696 -d . rebasing 1:8b6e13696c38 "added more things to a" file 'a' was deleted in local [dest] but was modified in other [source]. What do you want to do? use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u unresolved conflicts (see hg resolve, then hg rebase --continue) [1] But when we have "sourcecommitlimit > (no. of drafts from base to c1)", we do fullcopytracing $ hg rebase --abort rebase aborted $ hg rebase -s 8b6e13696 -d . --config experimental.copytrace.sourcecommitlimit=100 rebasing 1:8b6e13696c38 "added more things to a" merging foo/bar and a to foo/bar saved backup bundle to $TESTTMP/repo/repo/repo/.hg/strip-backup/8b6e13696c38-fc14ac83-rebase.hg $ cd .. $ rm -rf repo